Differences

This shows you the differences between two versions of the page.

--- fuss:mathematics [2018/07/30 05:25] – [Days in Month (Gregorian Calendar)] office
+++ fuss:mathematics [2021/12/03 17:28] – [Fonts] office
@@ Line 17: / Line 17: @@
 {{fuss:fuss_mathematics_logical_operators.png?512}}
+====== Fonts ======
+^ Type ^ Usage ^ Latex Equivalents ^
+| italics without kerning and ligature rules | used for variables  | automatically in math mode |
+| upright roman | abbreviations of operators, function names | ''<nowiki>\mathrm</nowiki>'' |
+| sans-serif and typewriter | not used except sometimes for special meaning | ''<nowiki>\mathtt</nowiki>'' |
+| math blackboard bold (calligraphic) | used mostly for sets | ''<nowiki>\mathbb</nowiki>'' |
+====== Divisibility ======
+  * by $2$, last digit in a number is divisible by $2$,
+  * by $3$, the result of all digits summed up in a number is divisible by $3$,
+  * by $4$, last two digits in a number form a smaller number that has to be divisible by $4$,
+  * by $5$, last digit divisible by $5$,
+  * by $10$, number ends in $0$
 ====== Index ======
 {{indexmenu>fuss:mathematics}}